Painting-machine.



H. E. FORD & P. E. TAYLOR.

PAINTING MACHINE.

APPLICATION FILED MAR. 25,1908.

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INVENTORS HI'AAM E. FORD FRANK E yLR ATIURNEYS any required point.

. level of the air pipe, through I 14 and fittings 15. A c'ontrolling valve 16 of.

HIRAM E. FORD AN D FRANK E. TAYLOR, OF DETROIT, MICHIGAN.

Pamrmamacnnm.

Specification of Letters Iatent.

Patented July 20, 1909.

Application med March 25, 1906. Serial No. 423,111.

To all whom it may concern:

Be it known that we, HIRAM E. FORD and FRANK E. TAYLOR, citizens of the United States of America, residingat Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Painting-Machines, of which the following is. a specification, reference being had therein to the accompanying drawmgs.

This invention relates to pneumatic paint or spraying machines and especially to a disposition of the parts whereby a body of mixed paint or other liquid to be sprayed is agitated by air underpressure which is further utilized to project a spray of paint at he invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

p In the drawings, Figure 1 is a plan view of the apparatus, embodying features of the invention, Fig. 2 is a view in elevation of the apparatus, Fig. 3 is a view in vertical central section, Fig. 4 isa view in section in detail of an atomizing device.

Referring .to the drawings, 1 indicates a combined paint reservoir and pressure tank of any suitable material and construction, preferabl a cylinder as shown, with filling cover 2 c amped by an archscrew 3. An air pipe 4 connected to any suitable compressor or other available source of supply extends down from the upper part of the tank above the normal level of its contents and enters the tank near its base through an elbow 5 and suitable fittings 6, its upper end being held in place by a blind coupling 7 or other preferred means.

An atomizer 8 is secured in the tank wall near the top. This preferably consists of a tee 9 horizontally su ported by a connecting nipple 10 in the tan wall, wlth a paint suction pipe 11 inserted in its main branch, and a jet tube 12 of less outer diameter than the interior diameter of the tee secured in the upper end of the suction pipe whose bore @is contracted, the discharge end ofthe tube 13 extending toward the outer arm of the tee concentrically therewith. Thesuction'pi e 11 enters the tank near its base below t e normal level of its contents preferabl at the a suitab e elbow any preferred type is inserted between the atomizers and the tank and a similar supply valve 17 is secured at any convenient point in the paint suction pipe 11 between the atomizer and tank. A pressure relief valve- 18 of any standard form is secured in the upper end of the tank, and a nipple 19 on the atomizer affords a suitable connection for --a delivery hose 20.

In 0 oration, air is forced into the tank pipe, the \paint in the latter falling back tothe level of the tank contents when the air is shut offf Thus the paint hose may be thrown down without fear of loss of the tank contents. There is but one pipe line to and from the tank and the construction is simple and cannot be readily injured.

Obviously changes in the details of con. struction may be made without de arting from the spirit of the invention, an i we do arrangement, of parts.

What we claim. as our invention 1s:-

a combined paint reservoir and tank, an atomizer connected with t e tank above the level of its contents to receive air under pressure therefrom, a aint suction i e leadin to said atomizer rom the tank' be ow the evel. of its contents, and means not limit ourselves to any particular form or i for introducin air under ressure to the tank j below the leve of the tan contents.

2. A pneumatic paint machine conslsting of a combined paint reservoir and pressure tank, means for applying air under pressure to the tank below the level of the contents thereof, a paint suction (pipe opening'into the tank near its lower en an air plpe leading from the upper part of the tan and an atomizer consisting of a tube secured to the upper end of the suction pipe andext'ending into the air pi e through its S1de,,&l1d bent therein in the direction of the flow of the air,

the bent end of said tube being of lesser diameter than the internal diameter of the air pip)e to form a passage for the air around the tu e.

3. A pneumatic paint machine comprising a combined paint reservoir and pressure tank, an outlet pipe for the air in the upper part thereof, an atomizer consisting of a tee connection on the end of the air outlet pipe, a paint suction ipe opening from the lower part of the tan whose upper end 'is connected to the tee, and a tube of less outer diameter than the inner diameter of the tee, secured in the upper end of the suction i e with its outlet opening in the direction ol tEe flow of the air into the branch of the tee, and an air pressure pipe discharging into the lower art of the tank.

4. pneumatic paint machine comprising a combined paint reservoir and pressure tank, an upright air inlet ipe whose upper end is above the normal evel of the tank contents and whose lower end discharges into the tank below the normal level of its contents, an atomizer consisting of a horizonw tally disposed tee, an air outlet pipe from the upperfpart of the tank connected to the inner en 0 the tee, a aint suction pipe whose lower end opens rom the tank below the normal level of its contents and whose upper end is connected to the lower end of the tee, the bore of said suction pipe being contracted at the upper end and a ct tube secured in said contracted end whio tube is of less external diameter than the internal diameter of the tee, and is bent laterally therein and extended concentrically into the free end of the tee, a pressure relief valve for the tank, and controlling valves for the paint and air pipes.

n testimony whereof we aflix our signatures in presence of two witnesses.

HIRAM E. FORD. FRANK E. TAYLOR. Witnesses:

C. R. STIoKNEY, OTTO F. BARTHEL. 

